Nut-lock.



W. P. KEHOE.

NU'If LOCK. APPLICATION FILED JULY 19 1910.

Patented Nov. 7, 1911.

gum/r- C 06.

By M

' ATTORNEYS.

WITNESSES:

WILLIAM F. KEI-IQE, OF BABYLON, NEW YORK.

NUT-LOCK.

' Specification of Letters Patent.

Patented Nov. 7, 1911.

Application filed July 19, 1910. Serial No. 572,694. v

To aZZ whomit may concern Be it known that l, YVILLmM F. KEHOE, a citizen of the United States, and residing at Babylon, in the county of Suffolk and State of New "i 'ork, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification, such as will enable those skilled in the art towhich it appertains to make and use the same.

This invention relates to'nut locks, and the object thereof is to provide an improved device of this class which is designed for use in connection with fish plates in coupling railway rails, and also in most. other places where devices of this class are required.

The invention is-itully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my iH'lPl'OYtilllQIlt are designated by suitable reference characters in each of the views, and in,wl1ieh:

Figure l is a sectional side view showing my improved nut loch device and the method of its operation; Fig. 2 a transverse section on the line 22 of Fig, l Fig. 3 an end view of a nut which I employ, and ;Fig. 4 a plan view of an open nut lock ring which forms a part of my invention. V

In the practice of my invention I provide a bolt (4 of, the usual or any preferred form and dimensions, and one end of said bolt is threaded as shown at (1 and mounted thereon is a nut b. I also provide a jam nut I; havin a reduced extension at c. The thread a of the bolt 11,, the thread 11 of the nut 7 and the thread of the nut c are right threads, but the reduced extension ol' the nut c is provided with a left thread z", and mounted thereon is a sup 'ilemental nut d which is also provided with a left thread which engages the thread a, and the nut cl is provided with an extension (l the inner diameter of which is larger than the diameter of the extension 0 ofthe not 1:, and the inner end portion 7) of the nut 7) is of such size as to enter the extension (Z of the nut (Z. I also provide an open lock nut ring a which is adapted to be passed on over the threaded end portion of of the bolt (0 before the nut 7) is screwed thereonto and after the jam nut 0 has been screwed into position and also after the supplemental nut d has been screwed onto the j am nut c.

The lock nut ring 6 is open at one side as shown at e and is provided with an inwardly directed lug 0 adapted to fit in a longitudinal groove a in the bolt a, and one end portion of the ring 6 is offset or outset tangentially as shown ate, and said offset or outset portion is providedwith spirally arranged sectional threads efl'and the outer .nut 71 is screwed fully home the beveled sides of the ratchet teeth 7) strike the beveled sides of the teeth a on the ring e, and" the offset or outset'end portion (1 of the said ring is forced haclnvardly slightly and the teeth a" of said ring engage the teeth 72 of the not 7), and said nut can not be turned in the reversed direction and can not work loose or come ott of the bolt a.

lVhcnm-rr it is desired to remove the nut 7) the Hll])l')l(!lll()lltttl nut d is turned until the thrcads 1! thereof engage the threads (1 ol' the ring a, and as the turning of the nut (Z continues the offset or outset end portion 0 of said. ring will be drawn farther back or inwardly until the teeth 0" thereof disengage the teeth 7% of the nut 7) at which time said nut 72 may be removed from the bolt a.

The extension (Z of the nut (1 forms a cap or cover for the ring 6 and prevents dust and dirt from working in between said ring and the nuts I), c, andd, and any suitable lubricating material may also be placed in the spaces around the ring 0 to prevent the saidnuts and the ring a from rusting.

Formed in the outer face of the ring 0 at a predetermined distance from the olfset or outset end portion thereof is a recess 6", and it-at any time the nut (l should fall to operate as hcrembe'tore described said nut may be turned back on the nut until the offset or outset end portion of the ring a is uncovered and awedge may be'driven' into the rec ss 0 and between said ring and the nut b, after which said nut may be turned off of the belt a by means of a wrench or in Y the usual manner. In Fig. l of the accomdrawing I have also shown at f and 9 two work pieces, or parts, connected by the bolt a but it will be understood that my improved nut lock may be employedteeth, a supplemental nut screwed on to the jam nut, and providedextension of the with an enlarged ceive the adjacent and an open ring adapted to be passed on over the bolt before the ordinary nut is screwed thereonto, and which is inclosed by the extension of the supplemental nut,

extension adapted to reone end portion of said ring being offset in the direction of the ordinary nut and provided with ratchet teeth adapted to engage the teeth on said nut, and the offset end portion of said ring being provided with spiral threads and said ring and bolt being end of the ordinary nutprovided with means to from turning on the bolt.

2. The combination with a threaded bolt, of a jam nut being provided with an extension, asupplelnentalnut mounted on said extension and provided with an enlarged end adapted to receive the adjacent end of the ordinary nut, an open ring adapted to be passed on over the bolt before the ordinary nut is screwed into position, one end ortion of the open ring being offset and .aid offset end portion of said ring in the ordi nary nut being provided with corresponding ratchet teeth, said ring and bolt being provided with means to prei'ent the ring from turning on the bolt and said bolt, nuts and ring being threaded substantially as described.

In testimonythat I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this 18th day of July 1910.

WILLIAM F. KEHOE.

Witnesses:

(LC. MULREANY, A. R. APPLEMAN.

prevent the ring 

